Despite the name and the fact that their logo is a big pirate flag, this is not a website for pirated games. This is a website for free indie games. These guys are packaging up a bunch of indie games and then taking them to the Game Developer's Conference, and also putting them online for anyone to download as a giant 1.4 GB zip file (that's the size of the last one they did anyway, which was for the Indie Games Festival).
This is a pretty good chance to get some recognition for your games, if you have any that you feel are good enough to share outside the RPG Maker cesspool.
I emailed them about how they felt about ripped resources and got this response:
They are allowed! Even if they weren't it's waaay too late, cause there is tons of it in there already :) I think it'd be great to get the RPG Maker community(ies?) involved, ripped music and sprites and all!
You want to get upgraded from RPG Maker user to indie game developer? This is your chance. Go to piratekart.com and click the big green button.
Submission was supposed to be only last weekend, but since being mentioned on Penny Arcade they have extended the deadline and are still accepting games. I'm not sure when they will close it off for real, so if I were you I'd hurry.
If you want to download the game package they put together for the Indie Games Festival, head here.